Plus there are 4-5 volvos (2 morn 2 eve each to n fro so total 10 rounds)which operate daily between ndls-pta (non-stop) and they always run full, and if ppl can shell out 600 bucks for volvo that too without food, i'm sure they would prefer to pay 600 bucks on a train which gives them food and snacks too.
Rest lets see how this train fares after introduction than we ll be in the better situation to comment.